Molecular mechanisms of cutaneous ageing To interpret the effects of dermatological peptides, the molecular alterations of cutaneous ageing must be understood: Intrinsic ageing (chronological) Decreased collagen synthesis by fibroblasts (1% per year after 30) AGE accumulation (Advanced Glycation End-products) by non-enzymatic glycation Fibroblastic senescence with SASP (Senescence-Associated Secretory Phenotype), chronic pro-inflammatory secretion Dermal atrophy , reduced vascularisation, loss of subcutaneous adipocytes Extrinsic ageing (photoageing) UV-B damage : cyclobutane pyrimidine dimers, keratinocyte DNA alteration UV-A and oxidative stress : ROS, lipid peroxidation, protein carbonylation MMP overexpression (MMP-1, MMP-3, MMP-9) via AP-1 activation, degrading collagen and elastin Solar elastosis : accumulation of degraded and dystrophic elastin in the dermis Dermatological peptides act at different levels of these cascades: anabolic stimulation (GHK-Cu, Matrixyl), catabolic inhibition (MMP modulation), anti-oxidant protection (GHK-Cu), inflammatory signalling modulation

Robertson LE, O'Brien S, Kantarjian H, Koller C, Beran M, Andreeff M , Lerner S, Plunkett W, Keating MJ
c) Side effects and tolerability This is where clinics often see the biggest practical difference
Fatigue can also occur in vitamin B12 deficiency, due to the lack of production of the electron-transport vehicle CoQ10 (a methylation product) and due to lack of production of the ATP shuttle vector creatine
Understanding your triggers, protecting your skin barrier, and sticking to a gentle routine can make a noticeable difference
Nothing in the published data licenses treating this molecule as a finished, approved medicine